src/MSRegionSurveilance/ConExtraction.cpp

// ConExtraction.cpp: implementation of the CConExtraction class.
#include "ConExtraction.h"
#include <string.h>
#include <time.h>
// Construction/Destruction
void CConExtraction::CalMask(vector<vector<Point>> regions, int width, int height)
{
	Mat img_mask_human_tmp(height, width, CV_8UC1, Scalar(0));
	Mat img_mask_tmp(height, width, CV_8UC1, Scalar(0));
	Mat img_mask_show(height, width, CV_8UC1, Scalar(0));
	/*const int points_size = regions.size()-1;
	int *npt = new int[points_size];
	printf("points_size=%d\n", points_size);
	Point **rp = new Point*[points_size];
	
	for (int p = 1; p < regions.size(); p++)
	{
		printf("p=%d  ", p);
		rp[p-1] = new Point[regions[p].size()];
		npt[p-1] = regions[p].size();
		for (int j = 0; j < regions[p].size(); j++)
		{
			rp[p-1][j] = regions[p][j];
			printf("(%d %d)  ", rp[p-1][j].x, rp[p-1][j].y);
		}
		printf("\n");
	}*/
	const int points_size = regions.size();
	int *npt = new int[points_size];
	Point **rp = new Point*[points_size];
	for (int p = 0; p < regions.size(); p++)
	{
		rp[p] = new Point[regions[p].size()];
		npt[p] = regions[p].size();
		for (int j = 0; j < regions[p].size(); j++)
		{
			rp[p][j] = regions[p][j];
		}
	}
	
	const Point **ppt = (const Point**)rp;
	fillPoly(img_mask_tmp, ppt+1, npt+1, points_size-1, Scalar(1));
	fillPoly(img_mask_show, ppt+1, npt+1, points_size-1, Scalar(255));
	fillPoly(img_mask_human_tmp, ppt, npt, 1, Scalar(1));
	fillPoly(img_mask_show, ppt, npt, 1, Scalar(128));
	/*imshow("img_mask", img_mask_show);
	cv::imwrite("img_mask.bmp", img_mask_show);
	cv::waitKey(0);*/
	
	mask_image = img_mask_tmp.clone();
	mask_image_human = img_mask_human_tmp.clone();
	total_mask_image_human = 0;
	for (int i = 0; i < mask_image_human.cols; i++)
	{
		for (int j = 0; j < mask_image_human.rows; j++)
		{
			if (mask_image_human.at<uchar>(j, i) == 1)
				total_mask_image_human++;
		}
	}
	
	if (npt)
	{
		delete[] npt;
		npt = NULL;
	}
	if (rp)
	{
		for (int i = 0; i < points_size; i++)
		{
			if (rp[i])
			{
				delete[] rp[i];
				rp[i] = NULL;
			}
		}
		delete[] rp;
		rp = NULL;
	}
}
CConExtraction::CConExtraction():m_nbd(2),m_area(100),m_size(2), human_ratio(0.1), bk_update_interval(10)
{
   m_Contourvec.clear();
   vector<CContour>().swap(m_Contourvec);
   {
	   std::vector<CContour>tmp = m_Contourvec;
	   m_Contourvec.swap(tmp);
   }
   //m_ForeTargetvec.clear();
   //m_rect=NULL;//???
   m_rect.bottom = 0;
   m_rect.top = 0;
   m_rect.left = 0;
   m_rect.right = 0;
   //mark value:it is used to mark the contour point in order to repeatly scan 
}
/*
//copy construction function
CConExtraction::CConExtraction(const int &m_nbd, const int &m_area, const int &m_size)
{
	this->m_nbd=m_nbd;
	this->m_area=m_area;
	this->m_size=m_size;
}
*/
CConExtraction::~CConExtraction()
{
	m_Contourvec.clear();
	vector<CContour>().swap(m_Contourvec);
	{
		std::vector<CContour>tmp = m_Contourvec;
		m_Contourvec.swap(tmp);
	}
	//m_ForeTargetvec.clear();
}
/******************************************************************************
* Function:        ExtractContours
* Description:     
* Calls：          FetchContour
* Called By:       VibeModelGetTrace
* Input:           pSrcImage     当前图像前景背景（前景为255 背景为0）
                   width         图像宽度
				   height        图像高度
				   step          图像RGB step
* Output:          
* Return:          m_Contourvec
*******************************************************************************/
vector<CContour> CConExtraction::ExtractContours(
unsigned char *pSrcImage,// the point to the source imagedata
const int &width,        // the  pixel number of each coloum
const int &height,       // the pixel number of each row(列)
const int &step          // the byte number of each colum
)
{
	m_Contourvec.clear();
	//m_Contourvec.swap(vector<CContour>(0));
	vector<CContour>().swap(m_Contourvec);
	{
		std::vector<CContour>tmp = m_Contourvec;
		m_Contourvec.swap(tmp);
	}
	
	unsigned char *img = pSrcImage; // the point to the source imagedata
	//unsigned char *Diaimg = pSrcImage;
	//unsigned char *Removeimg = pSrcImage;
	int x = 0;
	int y = 0; // the parameter of the height and the width of the image
	//make zero borders
	// 将边界设为背景
	for (x = 0; x < width; x++)
	{
		pSrcImage[x] = 0;
		pSrcImage[step * (height - 1) + x] = 0;
	}
	for (y = 0; y < height; y++)
	{
		pSrcImage[step * y] = 0;
		pSrcImage[step * y + width - 1] = 0;
	}
	/*
	memset(pSrcImage, 0, width);
	memset(pSrcImage + step * (height - 1), 0, width);
	for (y = 1; y < height - 1; ++y)
	{
		pSrcImage += step;
		*pSrcImage = *(pSrcImage + width - 1) = 0;
	}
	*/
    //remove the unrelevant noise
    //RemoveNoise(Removeimg,width,height,step);
	//it is used to remove the hole of the contour 
	//Dilation(Diaimg,width,height,step);
    //find the  external contour point
	int prev=img[0+step];
	int pcur;
	iCPoint origin; // 外轮廓开始时的坐标
	CContour m_contour;
	
	for (y = 1; y < height - 1; ++y)
	{
		for (x = 1; x < width - 1; ++x)
		{
			pcur = img[step * y + x];
		
			if ((prev == 0) && (pcur == 255)) // external contour to extract
			{
				origin.x = x;
				origin.y = y;
				m_contour = FetchContour(img + step * y + x, step, origin);	
				// for debug use
				//m_contour.label=0;
			 	
				if (m_contour.label)
				{
					m_Contourvec.push_back(m_contour);
				}
			}
			else if ((prev == 255) && (pcur == 0)) // inner contour to fill
			{
			}
			else
			{
				prev=pcur;
			} 		
		} //for
	} //for
	return m_Contourvec;
}
vector<CContour> CConExtraction::ExtractContours_Canny(unsigned char *pSrcImage, const int &width, const int &height, const int &step)
{
	m_Contourvec.clear();
	//m_Contourvec.swap(vector<CContour>(0));
	vector<CContour>().swap(m_Contourvec);
	cv::Mat matimg(height, width, CV_8UC3, pSrcImage);
	Mat DstPic, edge, grayImage;
	DstPic.create(matimg.size(), matimg.type());
	cvtColor(matimg, grayImage, COLOR_BGR2GRAY);
	blur(grayImage, edge, Size(3, 3));
	Canny(edge, edge, 35, 105, 3);
	cv::Mat small_edge;
	cv::resize(edge, small_edge, cv::Size(edge.cols / 2, edge.rows / 2));
	//	imshow("边缘提取效果", edge);
	//	cv::waitKey(1);
	cv::Mat bk_image = cv::imread("images2/0.jpg");
	Mat bk_DstPic, bk_edge, bk_grayImage;
	bk_DstPic.create(matimg.size(), matimg.type());
	cvtColor(bk_image, bk_grayImage, COLOR_BGR2GRAY);
	blur(bk_grayImage, bk_edge, Size(3, 3));
	Canny(bk_edge, bk_edge, 35, 105, 3);
	//imshow("bk_edge", bk_edge);
	//cv::waitKey(1);
	Mat difframe2, tempframe;
	absdiff(bk_edge, edge, difframe2);//做差求绝对值            2-3
	threshold(difframe2, tempframe, 20, 255.0, CV_THRESH_BINARY);
	
	dilate(tempframe, tempframe, Mat());//膨胀  
	Mat erode_element = getStructuringElement(MORPH_RECT, Size(3, 3));
	erode(tempframe, tempframe, erode_element);//腐蚀
											   imshow("tempframe", tempframe);
											   cv::waitKey(1);
	CConExtraction *pConExtraction = new CConExtraction();
	m_Contourvec = pConExtraction->ExtractContours(tempframe.data, tempframe.cols, tempframe.rows, tempframe.step);
	return m_Contourvec;
}
vector<CContour> CConExtraction::AeraMaxX(vector<CContour> CForegrounds, int topx)
{
	/*vector<CContour> CForegrounds_MaxX(0);
	int size_flaw = CForegrounds.size();
	if (size_flaw > 0 && size_flaw <= topx)
		return CForegrounds;
	else if (size_flaw > 0 && size_flaw > topx)
	{
		vector<int> area_all;
		for (int i = 0; i < size_flaw; i++)
		{
			area_all.push_back(CForegrounds[i].aera);
		}
		sort(area_all.begin(), area_all.end());
		for (int i = 0; i < size_flaw; i++)
		{
			if (CForegrounds[i].aera > area_all[size_flaw - topx])
				CForegrounds_MaxX.push_back(CForegrounds[i]);
		}
		if (CForegrounds_MaxX.size() < topx)
		{
			for (int i = 0; i < size_flaw; i++)
			{
				if (CForegrounds[i].aera == area_all[size_flaw - topx])
					CForegrounds_MaxX.push_back(CForegrounds[i]);
				if (CForegrounds_MaxX.size() >= topx)
					break;
			}
		}
	}
	return CForegrounds_MaxX;*/
}
void CConExtraction::InitBackgroud(unsigned char *pSrcImage, const int &width, const int &height, const int& channels)
{
	if (channels == 1)
	{
		cv::Mat img_gray(height, width, CV_8UC1, pSrcImage);
		background_image = img_gray.clone();
	}
	else
	{
		cv::Mat img_gray(height, width, CV_8UC3, pSrcImage);
		cvtColor(img_gray, img_gray, COLOR_BGR2GRAY);
		background_image = img_gray.clone();
	}
	time(&last_time);
}
vector<CContour> CConExtraction::ExtractContours_PixelSub(unsigned char *pSrcImage, const int &width, const int &height, const int &step)
{
	double dif;
	static int nFrmNum = 0;
	static cv::Mat img_diff, img_foreg_human;
	
	m_Contourvec.clear();
	vector<CContour>().swap(m_Contourvec);
	
	cv::Mat img_gray(height, width, CV_8UC1, pSrcImage);
		
	if (nFrmNum <= 2)
	{
		absdiff(img_gray, background_image, img_diff);
	}
	else
	{
		img_diffLast = img_diff.clone();
		absdiff(img_gray, background_image, img_diff);
		
		bitwise_and(img_diffLast, img_diff, img_foreg_human);
		threshold(img_foreg_human, img_foreg_human, 45, 255, 0);
		dilate(img_foreg_human, img_foreg_human, getStructuringElement(MORPH_RECT, Size(7, 7)));
		img_foreg_human = img_foreg_human.mul(mask_image_human);
		/*cv::imshow("img_foreg_human", img_foreg_human);
		cv::waitKey(1);*/
		int human_pixel_count = 0;
		for (int i = 0; i < img_foreg_human.cols; i++)
		{
			for (int j = 0; j < img_foreg_human.rows; j++)
			{
				if (img_foreg_human.at<uchar>(j, i) == 255)
					human_pixel_count++;
			}
		}
	//	printf("%d %f\n", human_pixel_count, (float)human_pixel_count / total_mask_image_human);
		//没有人的情况下 做物品遗留的判断
		if ((float)human_pixel_count / total_mask_image_human < human_ratio)
		{
			bitwise_and(img_diffLast, img_diff, img_foreg);
			threshold(img_foreg, img_foreg, 45, 255, 0);
			dilate(img_foreg, img_foreg, getStructuringElement(MORPH_RECT, Size(7, 7)));
			
			//erode(img_foreg, img_foreg, getStructuringElement(MORPH_RECT, Size(3, 3)));
			//dilate(img_foreg, img_foreg, getStructuringElement(MORPH_RECT, Size(3, 3)));
			
			img_foreg = img_foreg.mul(mask_image);
			/*cv::imshow("img_foreg", img_foreg);
			cv::waitKey(1);*/
			m_Contourvec = ExtractContours(img_foreg.data, img_foreg.cols, img_foreg.rows, img_foreg.cols);
			if (m_Contourvec.size() == 0)
			{
				time_t t;
				time(&t);
				dif = difftime(t, last_time);
				if (dif > bk_update_interval)
				{
					cv::Mat new_bk(height, width, CV_8UC1, pSrcImage);
					background_image = new_bk.clone();
					last_time = t;
				}
			}
		}
	}
	nFrmNum++;
	//printf("m_Contourvec size: %d\n", m_Contourvec.size());
	return m_Contourvec;
}
//vector<CContour> CConExtraction::ExtractContours_PixelSub(unsigned char *pSrcImage, const int &width, const int &height, const int &step)
//{
//	m_Contourvec.clear();
//	//m_Contourvec.swap(vector<CContour>(0));
//	vector<CContour>().swap(m_Contourvec);
//	
//	/*{
//		std::vector<CContour>tmp = m_Contourvec;
//		m_Contourvec.swap(tmp);
//	}*/
//
//	background_image = cv::imread("img_backg.bmp");
//	cv::Mat image2(height, width, CV_8UC3, pSrcImage);
//	cv::Mat display_image = image2.clone();
//
//	//cv::imshow("show", image2);
//	if ((background_image.rows != image2.rows) || (background_image.cols != image2.cols))
//	{
//		if (background_image.rows > image2.rows)
//		{
//			resize(background_image, background_image, image2.size(), 0, 0, cv::INTER_LINEAR);
//		}
//		else if (background_image.rows < image2.rows)
//		{
//			resize(image2, image2, background_image.size(), 0, 0, cv::INTER_LINEAR);
//		}
//	}
//
//	cv::Mat image1_gary, image2_gary;
//	if (background_image.channels() != 1)
//	{
//		cvtColor(background_image, image1_gary, cv::COLOR_BGR2GRAY);
//	}
//	if (image2.channels() != 1)
//	{
//		cvtColor(image2, image2_gary, cv::COLOR_BGR2GRAY);
//	}
//
//	cv::Mat frameDifference, absFrameDifferece;
//	cv::Mat previousGrayFrame = image2_gary.clone();
//	//图1减图2
//	subtract(image1_gary, image2_gary, frameDifference, cv::Mat(), CV_16SC1);
//
//	//取绝对值
//	absFrameDifferece = abs(frameDifference);
//
//	//位深的改变
//	absFrameDifferece.convertTo(absFrameDifferece, CV_8UC1, 1, 0);
//	//imshow("absFrameDifferece", absFrameDifferece);
//	cv::Mat segmentation;
//
//	//阈值处理（这一步很关键，要调好二值化的值）
//	threshold(absFrameDifferece, segmentation, 75, 255, cv::THRESH_BINARY);
//
//	//中值滤波
//	medianBlur(segmentation, segmentation, 3);
//
//	//形态学处理(开闭运算)
//	//形态学处理用到的算子
//	cv::Mat morphologyKernel = cv::getStructuringElement(cv::MORPH_RECT, cv::Size(3, 3), cv::Point(-1, -1));
//	morphologyEx(segmentation, segmentation, cv::MORPH_CLOSE, morphologyKernel, cv::Point(-1, -1), 2, cv::BORDER_REPLICATE);
//
//	//显示二值化图片
//	imshow("segmentation", segmentation);
//
//	//找边界
//	CvMemStorage* m_storage = cvCreateMemStorage(0);
//	CvSeq *pContour = NULL;
//	CvSeq *pConInner = NULL;
//	IplImage *ip_segmentation = (IplImage *)&IplImage(segmentation);
//	cvFindContours(ip_segmentation, m_storage, &pContour, sizeof(CvContour), CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE, cvPoint(0, 0));
//	//释放内存
//	IplImage *show_image = (IplImage *)&IplImage(image2);
//	// 外轮廓循环   
//	int wai = 0;
//	int nei = 0;
//
//	CContour m_contour;
//	for (; pContour != NULL; pContour = pContour->h_next)
//	{
//		wai++;
//		//// 内轮廓循环   
//		//for (pConInner = pContour->v_next; pConInner != NULL; pConInner = pConInner->h_next)
//		//{
//		//	nei++;
//		//	// 内轮廓面积   
//		//	dConArea = fabs(cvContourArea(pConInner, CV_WHOLE_SEQ));
//		//	printf("%f\n", dConArea);
//		//}
//		CvRect rect = cvBoundingRect(pContour, 0);
//
//		m_contour.left = rect.x;
//		m_contour.top = rect.y;
//		m_contour.right = rect.x + rect.width;
//		m_contour.bottom = rect.y + rect.height;
//		m_contour.xCenter = (m_contour.left + m_contour.right) / 2;
//		m_contour.yCenter = (m_contour.top + m_contour.bottom) / 2;
//		m_contour.label = false;
//		m_Contourvec.push_back(m_contour);
//		//cvRectangle(show_image, cvPoint(rect.x, rect.y), cvPoint(rect.x + rect.width, rect.y + rect.height), CV_RGB(255, 255, 255), 1, 8, 0);
//	
//	/*	rectangle(display_image,
//			cvPoint(rect.x, rect.y),
//			cvPoint(rect.x + rect.width, rect.y + rect.height),
//			cv::Scalar(127, 64, 120), 3, 1);*/
//	}
//
//
//	cvReleaseMemStorage(&m_storage);
//
//
//	//cvShowImage("show_img", show_image);
//	/*imshow("效果图", display_image);
//	cv::waitKey(1);*/
//
//	return m_Contourvec;
//}
/*
vector<CForegroundTarget> CConExtraction::DetectTarget(
unsigned char *pSrcImage,
const int &width,
const int &height,
const int &step
)
{
	m_Contourvec.clear();
	//m_Contourvec.swap(vector<CContour>(0));
	m_ForeTargetvec.clear();
	//m_ForeTargetvec.swap(vector<CForegroundTarget>(0));
	unsigned char *img = pSrcImage; //the point to the source imagedata
	unsigned char *Diaimg = pSrcImage;
	unsigned char *Removeimg = pSrcImage;
	int x = 0;
	int y = 0; // the parameter of the height and the width of the image
	//make zero borders
	memset(pSrcImage, 0, width);
	memset(pSrcImage + step * (height - 1), 0, width);
	for (y = 1; y < height - 1; ++y)
	{
		pSrcImage += step;
		*pSrcImage = *(pSrcImage + width - 1) = 0;
	}
     //remove the unrelevant noise
    RemoveNoise(Removeimg, width, height, step);
	//it is used to fill the hole of the contour 
	Dilation(Diaimg, width, height, step);
   //find the  external contour point
	int prev = img[0 + step];
	int pcur;
	iCPoint origin; //外轮廓开始时的坐标
	CContour m_contour;
	
    CForegroundTarget m_ForeTarget;
	for (y = 1; y < height - 1; ++y)
	{
		//img+=step;
		for (x = 1; x < width - 1; ++x)
		{
			pcur = img[step * y + x];
		
			if ((prev == 0) && (pcur == 255)) //external contour to extract
			{
				origin.x = x;
				origin.y = y;
				m_contour = FetchContour(img + step * y + x, step, origin);	
				if (m_contour.label)
				{
					//m_Contourvec.push_back(m_contour);
					m_ForeTarget.m_Contour = m_contour;
					m_ForeTarget.m_point.x = m_contour.xCenter;
					m_ForeTarget.m_point.y = m_contour.yCenter;
					m_ForeTargetvec.push_back(m_ForeTarget);
				}
			}
			else
			{
				prev=pcur;
			}
		} //for
	} //for
	return  m_ForeTargetvec;
}
*/
/******************************************************************************
* Function:        FetchContour
* Description:     
* Calls：          DELTAS
                   BoundingRect
* Called By:       ExtractContours
* Input:           pImage        指向当前点的指针
				   step          图像RGB step 每一行所占的字节数
				   pt            当前点坐标
* Output:       
* Return:          m_Contour
*******************************************************************************/
CContour CConExtraction::FetchContour(
unsigned char *pImage, // the pointer to the starting pixel position value of the external contour
const int &step,       // the byte number of each colum
iCPoint &pt            // the starting point position of the external contour
)
{
	int deltas[16];
	// 相邻8个点距当前点的索引差
	DELTAS(deltas, step, 1);
	memcpy(deltas + 8, deltas, 8 * sizeof(deltas[0])); //initialize the deltas array
	// 对应的邻域内8个点的x，y偏移
	int CodeDeltas[8][2] = {{1, 0}, {1, -1}, {0, -1}, {-1, -1}, {-1, 0}, {-1, 1}, {0, 1}, {1, 1}};
	unsigned char *i0 = pImage;
	unsigned char *i1, *i3, *i4 = NULL;
	int s, s_end;
	s_end = s = 4;
	vector<iCPoint> m_Pointvec;
	m_Pointvec.clear();
	vector<iCPoint>().swap(m_Pointvec);
	{
		std::vector<iCPoint>tmp = m_Pointvec;
		m_Pointvec.swap(tmp);
	}
	
	do
	{
		s = (s - 1) & 7;
		i1 = i0 + deltas[s];
		if (0 != (*i1))
		{
			break;
		}
	}while(s != s_end); //find the second contour point
	
	if (s != s_end)
	{
		i3 = i0;
		for(; ;) 
		{
			//s_end = s;
			// 通过循环取数 且当前点一定为前景 保证不会陷入无限循环中
			for(; ;)
			{
				i4 = i3 + deltas[++s];
				if (0 != (*i4))
				{
					break;
				}
			} //for(; ;)
			s &= 7;
			
			// 已经检索过的点不再进行分析 加速
			if (255 == *i3)
			{
				*i3 = this->m_nbd;
			}
			
			m_Pointvec.push_back(pt);
				
			pt.x += CodeDeltas[s][0];
			pt.y += CodeDeltas[s][1];
			if ((i4 == i0) && (i3 == i1)) //the condition of the connected component areas
			{
				break;
			}
			i3 = i4;
			s = (s + 4) & 7;
		} //for(; ;)
	} //if(s!=s_end)
	else
	{
		*i0 = this->m_nbd; //labeled by the signed char
	}
    CContour m_Contour;
        
	if (this->m_size <= m_Pointvec.size()) //the first step to remove the noise point
	{
        //get the rectangle of the contour
	    BoundingRect(m_Pointvec);
		int width = m_rect.right - m_rect.left;
	    int height = m_rect.bottom - m_rect.top;
	    int numpixel = width * height;
        if (this->m_area <= numpixel) //the second step to remove the noise point
		{
			m_Contour.left = m_rect.left;
	        m_Contour.top = m_rect.top;
		    m_Contour.right = m_rect.right;
		    m_Contour.bottom = m_rect.bottom;
			m_Contour.xCenter = (m_Contour.left + m_Contour.right) / 2;
			m_Contour.yCenter = (m_Contour.top + m_Contour.bottom) / 2;	
		    m_Contour.label = true;
		}
		else
		{
			m_Contour.left = 0;
	    	m_Contour.top = 0;
			m_Contour.right = 0;
		    m_Contour.bottom = 0;
			m_Contour.xCenter = 0;
			m_Contour.yCenter = 0;
		    m_Contour.label = false;
		}
	}
	else
	{
		m_Contour.left = 0;
	    m_Contour.top = 0;
		m_Contour.right = 0;
		m_Contour.bottom = 0;
		m_Contour.xCenter = 0;
		m_Contour.yCenter = 0;
		m_Contour.label = false;
	}
	m_Pointvec.clear();
	vector<iCPoint>().swap(m_Pointvec);
	{
		std::vector<iCPoint>tmp = m_Pointvec;
		m_Pointvec.swap(tmp);
	}
	return m_Contour;
}
//this function is used to get the external rectangle
void CConExtraction::BoundingRect(vector<iCPoint> Pointvec)
{
	int xmin, xmax;
	int ymin, ymax;
	
	vector<iCPoint>::iterator iter_begin = Pointvec.begin();
	vector<iCPoint>::iterator iter_end = Pointvec.end();
	xmin = xmax = (*iter_begin).x;
	ymin = ymax = (*iter_begin).y; //intialize the value
	iter_begin += 1;
	for(; iter_begin != iter_end; ++iter_begin)
	{
		int xPoint = (*iter_begin).x;
		int yPoint = (*iter_begin).y;
		if (xmin > xPoint)
		{
			xmin = xPoint;
		}
		if (xmax < xPoint)
		{
			xmax = xPoint;
		}
		if (ymin > yPoint)
		{
			ymin = yPoint;
		}
		if (ymax < yPoint)
		{
			ymax = yPoint;
		}
	}
     
	m_rect.top = ymin;
	m_rect.left = xmin;
	m_rect.right = xmax;
	m_rect.bottom = ymax;
}
/*
//this function is used to fill the hole of the contour
void CConExtraction::Dilation(
unsigned char *pSrcImage,
const int &width,
const int &height,
const int &step)
{
	int deltas[8];
	DELTAS(deltas, step, 1);
	int i, j;
	i = j = 0;
    int num;
	num = 0;
	unsigned char *lpSrc = NULL;
	unsigned char *lpDst = NULL;
	unsigned char *pixel = NULL;
	int label = 0;
	unsigned char *pDstImage = new unsigned char[height * width];
	for (i = 0; i < height; ++i)
	{
		for (j = 0; j < width; ++j)
		{
			pDstImage[i * width + j] = 0;
		}
	}
	
	for (i = 1; i < height - 1; ++i)
	{
		for (j = 1; j < width - 1; ++j)
		{
			label = i * step + j;
			lpSrc = pSrcImage + label;
		
			for (num = 0; num < 8; ++num)
			{
				pixel = lpSrc + deltas[num];
				if (1 == (*pixel))
				{
					pDstImage[label] = 1;
					break;
				}
			}
		}
	}
	for (i = 0; i < height; ++i)
	{
		for (j = 0; j < width; ++j)
		{
			label = i * width + j;
			pSrcImage[label] = pDstImage[label];
		}
	}
	delete  []pDstImage;
	pDstImage = NULL;
}
*/
/*
//this function is used to remove the noise of background before Fetching contour
void CConExtraction::RemoveNoise(
unsigned char *pSrcImage,
const int &width,
const int &height,
const int &step)
{
	int deltas[8];
	DELTAS(deltas, step, 1);
	unsigned char *pSrc = pSrcImage;
	int i, j;
	i = j = 0;
	int label = 0;
   
	unsigned char *pDstImage = new unsigned char[height * width];
	for (i = 0; i < height; ++i)
	{
		for (j = 0; j < width; ++j)
		{
			label = i * width + j;
			pDstImage[label] = pSrcImage[label];
		}
	}
	int label0, label1, label2, label3;
	label0 = label1 = label2 = label3 = 0;
	for (i = 2; i < height - 2; ++i)
	{
		for (j = 2; j < width - 2; ++j)
		{
			label0 = i * step + j;
			label1 = (i - 1) * step + j;
			label2 = (i + 1) * step + j;
			label3 = (i + 2) * step + j;
			if (1 == pSrc[label0])
			{
				if (0 == pSrc[label0 + 1] && 0 == pSrc[label0 - 1]
				   && 0 == pSrc[label1] && 0 == pSrc[label1 + 1] && 0 == pSrc[label1 - 1]
				   && 0 == pSrc[label2] && 0 == pSrc[label2 + 1] && 0 == pSrc[label2 - 1])
				{
					pDstImage[label0] = 0;
				}
				if (1 == pSrc[label0 + 1] && 0 == pSrc[label0 - 1] && 0 == pSrc[label0 + 2]
				   && 0 == pSrc[label1] && 0 == pSrc[label1 + 1] && 0 == pSrc[label1 - 1] && 0 == pSrc[label1 + 2]
				   && 0 == pSrc[label2] && 0 == pSrc[label2 + 1] && 0 == pSrc[label2 - 1] && 0 == pSrc[label2 + 2])
				{
					pDstImage[label0] = 0;
					pDstImage[label0 + 1] = 0;
				}
				if (1 == pSrc[label2] && 0 == pSrc[label2 + 1] && 0 == pSrc[label2 - 1]
			       && 0 == pSrc[label0 + 1] && 0 == pSrc[label0 - 1]
				   && 0 == pSrc[label1] && 0 == pSrc[label1 + 1] && 0 == pSrc[label1 - 1]
				   && 0 == pSrc[label3] && 0 == pSrc[label3 + 1] && 0 == pSrc[label3 - 1])
				{
					pDstImage[label0] = 0;
					pDstImage[label2] = 0;
				}
				if (1 == pSrc[label0 + 1] && 0 == pSrc[label0 - 1] && 0 == pSrc[label0 + 2]
				&& 1 == pSrc[label2] && 1 == pSrc[label2 + 1] && 0 == pSrc[label2 - 1] && 0 == pSrc[label2 + 2]
				&& 0 == pSrc[label1] && 0 == pSrc[label1 + 1] && 0 == pSrc[label1 - 1] && 0 == pSrc[label1 + 2]
				&& 0 == pSrc[label3] && 0 == pSrc[label1 + 1] && 0 == pSrc[label3 - 1] && 0 == pSrc[label3 + 2])
				{
					pDstImage[label0] = 0;
					pDstImage[label0 + 1] = 0;
					pDstImage[label2] = 0;
					pDstImage[label2 + 1] = 0;
				}
			}
		}
	}
	for (i = 0; i < height; ++i)
	{
		for (j = 0; j < width; ++j)
		{
			label = i * width + j;
			pSrcImage[label] = pDstImage[label];
		}
	}
	delete  []pDstImage;
	pDstImage = NULL;
}
*/